21489075

素因数分解:

$3^2\times 5^2\times {\mathrm{95507}}^1$

素因数の和:95523

約数の個数: 18

約数和(自身を含む): 38489724

約数和(自身を除く): 17000649

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 95507, 286521, 477535, 859563, 1432605, 2387675, 4297815, 7163025, 21489075]

約数ペア:

[(1, 21489075), (3, 7163025), (5, 4297815), (9, 2387675), (15, 1432605), (25, 859563), (45, 477535), (75, 286521), (225, 95507)]